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Battery module, battery system and electric vehicle

Inactive Publication Date: 2010-10-28
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]An object of the present invention is to provide a battery module capable of detecting a current flowing through a plurality of battery cells with a simple configuration, and a battery system and an electric vehicle including the same.

Problems solved by technology

However, providing current detecting circuits between the battery modules for monitoring the current flowing through the battery modules leads to a complicated configuration of the monitoring device.

Method used

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  • Battery module, battery system and electric vehicle
  • Battery module, battery system and electric vehicle
  • Battery module, battery system and electric vehicle

Examples

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first embodiment

[1] First Embodiment

[0055]Hereinafter, description will be made of a battery module according to a first embodiment and a battery system including the same while referring to the drawings. Note that the battery module and the battery system according to the present embodiment are mounted on an electric vehicle (an electric automobile, for example) using electric power as a driving source.

[0056](1) Configuration of the Battery System

[0057]FIG. 1 is a block diagram showing the configuration of the battery system according to the first embodiment. As shown in FIG. 1, the battery system 500 includes a plurality of battery modules 100, a battery ECU (Electronic Control Unit) 101 and a contactor 102, and is connected to a main controller 300 of the electric vehicle via a bus 104.

[0058]The plurality of battery modules 100 of the battery system 500 are connected to one another through the power supply line 501. Each battery module 100 includes a plurality of (eighteen in this example) batte...

second embodiment

[2] Second Embodiment

[0195]Hereinafter, description will be made of an electric vehicle according to a second embodiment. The electric vehicle according to the present embodiment includes the battery modules 100 and the battery system 500 according to the first embodiment Note that an electric automobile is described as one example of the electric vehicle in the following paragraphs.

[0196]FIG. 15 is a block diagram showing the configuration of an electric automobile including the battery system 500 of FIG. 1. As shown in FIG. 15, the electric automobile 600 according to the present embodiment includes the main controller 300 and the battery system 500 of FIG. 1, a power converter 601, a motor 602, a drive wheel 603, an accelerator system 604, a brake system 605, and a rotational speed sensor 606. When the motor 602 is an alternate current (AC) motor, the power converter 601 includes an inverter circuit.

[0197]In the present embodiment, the battery system 500 is connected to the motor...

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PUM

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Abstract

A battery module includes a plurality of battery cells, and includes a voltage bus bar and a voltage / current bus bar that connect electrodes of the plurality of battery cells to one another. Solder traces are formed in regions that are spaced apart from each other in the voltage / current bus bar. Furthermore, the battery module includes an amplifying circuit and a detecting circuit. The amplifying circuit amplifies a voltage between the solder traces formed in the voltage / current bus bar. The detecting circuit detects the voltage between the solder traces amplified by the amplifying circuit.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a battery module, and a battery system and an electric vehicle including the same.[0003]2. Description of the Background Art[0004]Battery modules capable of being charged and discharged are used as driving sources of movable objects such as electric automobiles. Such a battery module includes a plurality of batteries (battery cells) connected in series, for example.[0005]Users of the movable object including the battery module need to know the remaining amount of battery capacity (charged capacity) of the battery module. In addition, it is necessary to prevent overcharge and overdischarge of each cell constituting the battery module at the time of charging and discharging the battery module. Therefore, a device for monitoring a state of the battery module has been proposed (see JP 8-162171 A, for example).[0006]JP 8-162171 A describes the monitoring device of a battery pack including the...

Claims

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Application Information

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IPC IPC(8): G01N27/416H01M50/505H01M50/51H01M50/524H01M50/569
CPCB60L11/1855B60L11/1864B60L11/1879G01R31/362G01R31/3658H01M2/206Y02T10/7061H01M10/425H01M10/48H01M10/482H02J7/0021Y02T10/7005Y02T10/7055H01M2/34G01R31/396G01R31/3835B60L58/19B60L58/21B60L50/64Y02T10/70Y02E60/10H02J7/0013H02J7/0047H01M50/51H01M50/505H01M50/569H01M50/524H01M10/44H01M50/502H01M50/572H01M2220/20
Inventor KISHIMOTO, KEIJINISHIHARA, YOSHITOMOOHKURA, KAZUMITAGUCHI, KENJI
Owner SANYO ELECTRIC CO LTD